[Elecraft] K1 toroid winding

[John R. Lonigro]

Bud:
Here's a little tip (I'll leave the poetry to Wayne):  The first winding 
tends to be the loosest, so wind N + 1 turns and then remove the first 
one, ending up with the correct number.  But make sure you double check 
the number of turns.  Being off by "only" 1 turn may not sound bad, but 
in many cases it represents a big increase in inductance, possibly over 
10%.  As others have said, just count the number of times the wire 
passes through the center of the toroid.

I've easily wound well over 100 toroids in the past few years and have 
never had a problem with winding them.  Be especially careful stripping 
the wire before soldering it into the circuit.  You can search the 
archives for various techniques.  One thing I do in that regard is 
insert the part BEFORE stripping the wire, to check for proper fit.  
Then I trim it, leaving maybe 1/8" extra on each lead.  Finally I remove 
it and concentrate on stripping the wire where I know it's going to be 
contacting the solder pad.  If you don't trim it first, you'll end up 
spending lots of time stripping parts of the wire that will either be 
snipped off after soldering or will be nowhere near the solder pad.

73's and good luck,

John AA0VE
bud73 at comcast.net wrote:
> I just ordered a K1 four band transceiver.
> I am worried about the torroids .... should I be?
>
>     Bud
>